Holding device for sole-clamping means.



G. E. BRITTAIN. v HOLDING DEVICE FOR SOLE CLAMPING MEANS.

APPLICATION FILED MAR 8 191 1,250,550. Patented Dec. 18,1917.

Boston, in the county of Suffolk, in the State of li'lassachusetts, have invented an Improve-1 'Means, ofwhich the tion. A

UNITED stra ns- GEQRGE BRITTAIN, 01

A nnr HOLDING 'nnvren roe soLn-o-mrrrme MEANS;

. Application filed ma as, 1e15, [seal-a n a To all whom it may concern 2' Be it known that I, GnoReE E. Bnrr'lnm, a citizen of the UnitedStates, residing at ment in Holding Devices for Sole-Clamping following is a spec fica- This invention relates to certain improvements in devicesfor holding a stack of cemented soles and taps pressed together, wh le the cement sets, and'more particularly to imthis provements on the particular device for urpose, described in my pending application #814,641.

In said prior shaped strap which engaged the upper clamping member were arranged-to slide within the arms of the lower strap, and an independent clip connected to through which the arms of the upper strap were arranged to slide, pivoted in said clip and arranged in slots formed in the arms of position to engage the arms of the upper strap.

This construction was found to be objectionable for several reasons. The straps could not be moved together to the extent de: sired, as the arms of the upper strap en gaged the sole-holding board of the lower.

strap, in attempting to compress a small stack, provided the arms were made long enough to compress a large stack, thereby reducing its range of usefulness. Also, the holding surfaces of the cam dogs were not as long as desirable, and the cost of manufacture was found to be excessive.

'The object of'the present invention is to provide a form of holding device for the clamping members of the same general character as that of my said prior application,

in which the arms ofthe upper strap will not be limited in their movement by the lower sole-engaging board, in which looking cam levers may strap, and

was provided, which was the ends of the lower strap and the lower strap, in p p be employed which are of the same width as the arms of the upper,

Specification of'L'ett'ers Patent. Paterfi-ted D 'ec'.'18,1917'.

I I Fig. 2 is an endelevationthereof, showing the parts in clamping. position.

Figs. 3 and a are detail side and ,plan views'of theclamping lever." i

As shown in thedrawing, the'U' -shaped strap a, which is designed to engage the lower clampingboard bfor the stack of soles,

provided witha pair of outwardly prO ectin'g ear 'a,'atthe ends ofits arms, provid- 111g a slot therebetween,

of the upper strap 0 are adapted tofslide in close proximityto the sides of. saidfears, and also attheir inners'ides, to'the outer sides of the arms of the lower strap a. Acam e V I lever (Z ismountedjbetween each'pair of ears device the arms of the U- f a, on jtrunnions e supported thereby,- the '-length of;"the cami faces thereof being approximately the samevv as the width of the upper strapgarms c, said levers, also, being in which the arms so arranged th'at 'when the arm of the up- 'per strap are slid.

will be to'fthrow' thearmsfof the cam levers the c'am'levers being upwardly to unlockedposition,as indicated ,in Fig. .3, so that the upper strapmay be ressed downwardly without obstruction,

but will be locked agamst upward movement by the between the members of downwa y," t action downward swinging of the cam lev vers, which are normally held in position to clamping boards and strap members together to the desired extent and then, to avoid 1e leasing the pressure to any appreciable extent, when the press members are separated, the cam-lever-arms are forced downward as far as possible by hand, springing the arms of the upper strap against the outer sides of the lower strap into strong frictional engagement therewith and preventing vseparation thereof, any tendency of the strap members, to separate, acting to cause the cam levers to swing downwardly still farther, thereby correspondingly increasing the force with which the arms are heldtogether. When the soles are removed from between the clamping boards, the stack is preferably first inverted, andth'en the cam levers are pressed down, unlocking the arms, so that the bottom board and strap member maybe lifted from the stack.

With the above-described construction, the '7 b tw the limited by th i l mpin ec f tue each 7 device is sition.

members, I

' 'allel arms formed with, outer and, inner clampingfaces and parallel edges and the other [member l avi ig a pair of outwardly surface provided for frictional engagement a s i e eeril lzeseep m i the extreme'po sitions of s ration n which they may be locked togetlie latter, thereby providing a stronger frictional engagement, whilethe range of ad- 'ustment of the anns is praetic ally only e lengthofthearms of the upper strap, the }actual range being I only slightly less than jthe lengthj thereof;

, possibleto, use the dev cejinan inyertedpo- Iclaim: Ae lee ee deuce ee r len we tone m mber ha ms a e Qf ra projec ting ears at each s de thereof and. a

each being arranged in sliding engagement at its edges with the adjacent sides of pne .of said pairs of, ears v and, its inner face wit t 'e irssrqn ee, eate r e f the r, greater than with said constructionhofumyi saidprioriapplication, the cam levers engage the upper I Arm throughout-t e t Width, of the forced into clamping engagement outer face of such arm, to force the inner face thereof against the adjacent face of the eth r me b .sli ding relationiwith the outer vvhich they are guidedband a I pivoted in, the outer pair of ears, in position to permit clamping movement ofsaid members and be moved pair of ears, 7

other member, and a lever pivoted in each of the corresponding arm and arranged to be with the 2. A clamping device. comprising an up- )er and a lower member each havin a air .of, oppositely ex tending, parallel arms, the arms of the upper member being arranged to overlap athel arms of the lower member in sides thereof, andthe arms of the lower, member each having a pair of ears projecting outwardly past the arms of the upper member, between whichthe arms of the latter slide, and by cam lever end portions of each into locking engagement with the outer sides of the arms of the upper member to prevent separation of said members.

In testimony whereof, I have signed my twosubscribing, witnesses. "GEORGE E. BRITTAIN.

, Witnesses L ,HARmM N, R. CONNELL.

wweshi ten ll-e nameto this'specification in the presence of ,E991!.fil il feij llfi 92????1 fireace e h. by efls ess st CW M o e nts 

